Entry for the Jazza July 2017 Challenge of the month open category. It's a pun for tensile strength, but with like, pensile strength, and it shows a pencil pulling metal like its say tensile strength, which rhymes. Terrible joke but it's sorta funny and the illustration looks neat. Maybe I'd wear this I dunno, but it isn't the worst shirt I've ever seen.

IN PROGRESS SKETCH: http://imgur.com/ycXARGf